JPH086916Y2 - Eaves gutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an eaves gutter in which a reinforcing core material is coated with a thermoplastic resin made of fiber reinforced resin.

(Prior Art) An eaves gutter is generally composed of a gutter body and a gutter ear, and is widely used by being extruded in a long length with a thermoplastic resin such as vinyl chloride resin. However, such a thermoplastic resin eaves gutter is
Since it has large thermal expansion and contraction and low rigidity, it has the drawback that it is deformed due to temperature changes during the four seasons and day and night, and that cracks easily occur.

As an eaves trough in which such drawbacks are improved, as shown in FIG. 3, a eaves trough in which a reinforcing core material 1 is extrusion-coated with a thermoplastic resin 2 such as vinyl chloride resin is proposed. In this case, the reinforcing core material 1 generally extends not only to the gutter body portion 3 but also to the gutter ear portion 4 to reinforce this portion. The reinforcing core material 1 ′ of the gutter ear part 4 is formed in a substantially cylindrical shape along the gutter ear part 4, and the end edge l ″ thereof is in contact with the reinforcing core material 1 of the gutter ear part 4 or is slightly separated. The thermoplastic resin 2 is extrusion-coated on the inside and the outside thereof.

(Problems to be solved by the invention) However, in the eaves trough using such a conventional reinforcing core member, particularly the reinforcement of the trough ear portion near the end edge of the reinforcing core member is insufficient. Therefore, when the eaves gutter is exposed to direct sunlight and becomes hot, the gutter ear near the end edge of the reinforcing core may be deformed, and the gutter ear may open or the mounting bracket may come off. The functions of the parts are not fully exerted.

The present invention solves the above problems, and its purpose is to sufficiently strengthen the trough near the end edge of the reinforcing core so that the trough can be used even in a high temperature environment. It is to provide eaves gutter without deformation.

(Means for Solving the Problem) The eaves trough of the present invention is an eaves trough in which a thermoplastic resin is extruded and coated on a reinforcement core material, and the reinforcement core material of the gutter ear portion is formed into a loop-shaped tubular shape, The end edge portion is bent and laminated on the reinforcing core material inside the gutter ear portion, whereby the above object is achieved.

 Hereinafter, the present invention will be described with reference to the drawings.

FIG. 1 is a partially cutaway transverse sectional view showing an example of the eaves gutter of the present invention. In FIG. 1, 10 is a reinforcing core material and 20 is a reinforcing core material 10.
Extruded thermoplastic resin, 30 gutter body, 40
Is the gutter.

As the reinforcing core material 10, a large number of rovings made of inorganic fibers such as metal fibers, carbon fibers, glass fibers and organic fibers such as aromatic polyamide fibers, non-woven fabrics, woven fabrics, nets,
A thermoplastic resin powder or emulsion such as vinyl chloride resin, or a sheet-shaped product impregnated with a thermosetting resin liquid such as unsaturated polyester resin is used.

The reinforcing core material 10 'of the gutter ear portion 40 is formed outside the upper end of the gutter body portion 30 in a loop type tubular shape such as a square or a round shape according to the shape of the gutter ear portion 40, and its end edge portion. 10 ″ is bent and laminated on the reinforcing core material 10 ′ inside the trough portion 40. In this laminated portion, the reinforcing core materials may be simply overlapped with each other or may be bonded.

As the thermoplastic resin 20, a resin having good weather resistance such as vinyl chloride resin, acrylic resin, or nylon resin is used. When the adhesiveness between the reinforcing core material 10 and the thermoplastic resin 20 is poor, the surface of the reinforcing core material 10 is coated with an adhesive, and the thermoplastic resin 20 is extrusion-coated on this.

In the eaves trough of FIG. 1, the thermoplastic resin 20 is extrusion-coated on both the inside and outside of the reinforcing core material 10 ′ of the trough 40, but as shown in FIG. 40 reinforcing cores 10 '
The thermoplastic resin 20 may be extrusion-coated only on the outer side.

 The eaves gutter of the present invention is configured as described above.

(Operation) In the eaves trough in which the thermoplastic resin is extruded and coated on the fiber-reinforced resin reinforcing core material of the present invention, the reinforcing core material of the gutter ear portion is formed into a loop type tubular shape, and its end edge is When it is bent in one direction and laminated on the reinforcing core material inside the trough, and the thermoplastic resin is extrusion coated on this, the reinforcing core material of this laminated part is pressed from both sides by the coated thermoplastic resin. The reinforcing core material at the end edge portion is integrally continuous with the trough and the trough, and this portion is reinforced.

(Examples) Examples and comparative examples of the present invention will be described below.

Example 1 First, 20 glass rovings (# 4400: manufactured by Nitto Boseki) were arranged in the longitudinal direction and introduced into a fluidized bed, and while being defibrated, they were blown up by air with a pressure of 2.5 kg / cm ² to be in a floating state. A vinyl chloride resin compound powder (TK-400: manufactured by Shin-Etsu Chemical)
Fluidized and impregnated, and passed through a heating furnace to heat the resin blended powder to 190 ° C., and then passed through a pair of heating pinch rolls with a surface temperature of 200 ° C. to perform thermocompression bonding to completely melt,
A sheet-like reinforcing core material having a width of 0.6 mm and a glass roving content of 30% by volume was prepared.

The reinforcing core material was passed through a heating furnace, softened by heating to 80 ° C., and formed into a square eaves gutter shape by a heating forming device. At this time, the reinforcing core material of the gutter ear portion was formed into a loop type tubular shape, and the end edge thereof was bent and laminated on the reinforcing core material inside the gutter ear portion.

Subsequently, the shaped reinforcing core material was introduced into the crosshead mold of the extruder, and the vinyl chloride resin compound with an average degree of polymerization of 1050 was applied to the surface of the gutter ear and the eaves gutter body at a thickness of 0.5 mm at 185 ° C. It was melt extruded and coated. Then, the surface was finished by a sizing device, cooled, and pulled by a tensioner to manufacture a long eaves gutter having a thickness of 1.5 mm as shown in FIG.

This eaves gutter was cut into a length of 4 m to make a test piece,
After leaving it in an oven at ℃ for 5 hours, the deformation of the gutter was observed, and the deformation of the gutter was very small.

Example 2 A resin solution was prepared by mixing 100 parts by weight of an unsaturated polyester resin (# 5136: manufactured by Nippon Yupica) and 2 parts by weight of benzoyl peroxide (Percure 0: manufactured by NOF CORPORATION) in an impregnation tank, and chlorided in Example 1. The procedure of Example 1 was repeated, except that the unsaturated polyester resin liquid was impregnated instead of fluid impregnation of the vinyl resin blended powder. In this case also, the deformation of the gutter ear was very small.

Comparative Example 1 The same procedure as in Example 1 was performed, except that the end edge portion of the reinforcing core material of the gutter ear portion was molded so as to be slightly separated in the gutter ear portion as shown in FIG. In this case, the deformation of the gutter portion was very large.

Comparative Example 2 The same procedure as in Example 2 was carried out except that the end edge portion of the reinforcing core material of the gutter portion was formed so that it was slightly separated in the gutter portion as shown in FIG. Also in this case, the deformation of the gutter portion was very large.

(Effects of the Invention) As described above, the eaves gutter of the present invention has the reinforcing core material extruded and coated with the thermoplastic resin, and the reinforcing core material of the gutter ear portion is formed into a loop-shaped tubular shape, and the end edge thereof is formed. Since the part is laminated on the reinforcing core material of the gutter body, the reinforcing core material 1 at the end edge is integrally continuous with the gutter body part and the gutter ear part, which is a weak reinforcement in the conventional eaves gutter. The gutter ear portion near the end edge of the core material is sufficiently reinforced like the gutter body.

Therefore, the eaves gutter of the present invention does not deform the gutter ear part even when used in a high temperature environment exposed to direct sunlight, prevents the gutter ear part from opening and the mounting bracket from coming off, and the function of the gutter ear part is improved. It is fully demonstrated.

[Brief description of drawings]

1 is a partially cutaway cross-sectional view showing an example of the present invention, FIG. 2 is a partially cutaway cross-sectional view showing another example of the present invention, and FIG. 3 is a partially cutaway cross-sectional view showing a conventional example. Is. 10 ... Reinforcing core material, 10 '... Cylindrical reinforcing core material, 10 "... Reinforcing edge core material, 20 ... Thermoplastic resin, 30 ... Gutter body part, 40 ... Gutter ear part.

Claims (1)

[Scope of utility model registration request] 1. In an eaves trough in which a thermoplastic resin is extrusion-coated on a fiber-reinforced resin reinforcing core material, the reinforcing core material of the gutter ear portion is formed into a loop-shaped tubular shape, and its end edge portion is bent. An eaves gutter characterized by being laminated on a reinforcing core material inside the gutter ear.